Homeostasis in Humans

If the environment gets cold, we will often shiver in order to:

• keep body temperature the same as the external temperature

• decrease body temperature

• increase body temperature

• regulate blood pressure

Homeostasis

• allows for a wildly fluctuating internal environment

• is impossible in vertebrates

• is the maintenance of the internal environment in the body of organisms, to be in a balanced and stable condition.

Tags

NGSS.HS-LS1-3

When you are cold, you shiver and your blood vessels constrict, which warms you up. When you are hot, you sweat and your blood vessels dilate, which cools you down.

• False

• True

Homeostasis refers to the maintenance of ______________ in the body of an organism.

• internal environment

• external environment

Homeostasis in the human body is often maintained by a: 

• the brain only

• solar feedback loop

• the muscles

• negative feedback loop

Maintaining a stable internal

environment is called

• homeostasis

• equilibrium

• balance

• evenness

Which statement describes a failure of homeostasis in humans?

• When activity in an individual increases, the body temperature rises, and the individual sweats.

• As the concentration of carbon dioxide increases in the human body, the lungs begin to expel more carbon dioxide.

• A viral infection leads to a decrease in the number of white blood cells being produced in the body.

• After an individual gets a cut, certain chemical changes begin the healing process.

Tags

NGSS.HS-LS1-3

Which two systems work together to maintain homeostasis while transporting oxygen throughout the body and removing carbon dioxide?

• circulatory and respiratory

• respiratory and excretory

• circulatory and digestive

• respiratory and digestive

Which of the following is an example of homeostasis?

• adapting to your environment

• maintaining an appropriate respiration rate

• the sum of all of your chemical reactions

• being composed of more than one cell

Tags

NGSS.MS-LS1-3

What describes a lack of water in the blood?

• Dehydration

• Rehydration

• Hydration

• Concentrated